Means for holding films in spaced coil forms



1 624 586 Aprll 12, 1927. L. czAK i w I 6/ Patented Apr. 12, 1927. p i i V UNITED STATES PATENT OFFICE.

LAszm czaxo, oi: honnnsr, HUNGARY.

MEANS FOR HOLDING FILMS IN SPACED COIL FORMS.

Application filed February 16, 1922, Serial No. 537,120, and in Hungary April 8, 1981.

This invention relates to an improved reel member with its spokes and rim can be enfor photographic films, the object of the intirely separated from the other. vention being to provide a device of this As shown in the drawings, the usual sencharacter having means for exerting pressitized film 1 is wound in spiral formation sure on the film at the edges thereof therearound the composite hub formed by the 00 by to effectively prevent the film from bemembers 7 and 7, and if desired, a spacing coming distorted or warped during develstrip 3, the edges 4 of which are corrugated opment. and simultaneously to maintain the so as to retain. the coils of the sensitized strip coils of the film separated one from the 1 in spaced relation, may be wound thereother. i j with, as shown at 2 in Figs. 1 and 3. The 66 WVith the foregoing and other objects in corrugations 4, of the spacing strip are 10- view, which will appear as the description cated at. the extreme edges thereof and conproceeds, the invention consists in the novel tactwith the film 1 only outside of the usual features of construction and combination perforations 5, so that the entire picture field of parts which will be more fully described of the film is left entirely clear tobe acted on hereinafter and particularly pointed out in by the developing and fixing solutions. the claims. The hub members 7, 7 are of such a length In the drawings accompanying and formand the rims 8 of such width that when the ingpart of this specification, film is in position in the reel the spokes 6 1g. 1 is a fragmentary perspective view, will engage the edges of the film coils slighton a somewhat exag erated scale, of two ly before the upper hub member 7 and rim portions of a film an its spacing member, member 8abut against theircompanion mem illustrating one of the corrugated edges of hers, as clearly shown in Fig. 4, so that the latter; upon tightening the knob orhead 10 to carry 2 2 is a fragmentary sectional view of a the hub members and rim members into coiled film, showing a modified form of the abutting engagement the spokes 6 will exert spacing member; sufiicient pressure on the edges of the film Fi 3 is a fragmentary lan view of a to prevent movement thereof, but insufficient coiled film, the coils of whic are separated to cause distortion or warping of the film. 39 in the same manner as shown in Fig. 1; The spokes 6 are each preferably enclosed in 8 Fig. at is a fragmentary vertical section or a layer 11 of flexible material such as rubber, a reel constructed in acordance with the as clearly shown in Fig. 2, whereby not onl present invention, illus'trating a film wound is injury to the edges of the film avoide thereon; and but when the hub members are clamped toas Fig. 5 is a plan view of the structure gether the edges of the film will bite into 00 shown in Fig. 4. the flexible coating of the spokes and cause The same characters of reference desigsaid coating to bulge into the spaces be-' the same parts in the different figures tween the coils of the film and thus prevent of the drawings. shifting thereof, so that, even if the spac- 40, Referring to the drawings, the reel coming strip 3 is omitted the coils will be re- 06 prises a central hub formed of two enlarged tamed inspaced relation by means of the portions 7 and 7', thepor'tion 7 being robulging of said flexible coating.

vided with a tubular extension 9 on w rich I am aware that the revision of interthe other hub portion 7 is mounted forslidmediate strips for retaining the coils of the 445 mg movement toward and from its companfilm spaced apart to permit free access of ion member, as shown in Fi 4. The exthe treating solutions is not broadly new.

tension 9 is exteriorly threa ed at its free However, with all of the devices with which end for the recepjtion of an enlarged head or I am familiar, their 'use is accompanied by knob 10, where y the entire reel may be the disadvanta ethat the-film is unsupported so convenientiy lifted and carried from place at its edges, an cons uently is free to move 10 to'place. n each of the hub members! and -and become distorte thus inducing the 7 are secured a lurality of radially extendformation of air bubbles on the film so that ing spokes 6, .t e spokes of the respectiveuniformit of treatment is impossible. In'.

hub members being secured at. their outer contradistmcticn, the: present invention, b i

55 ends in separate rims 8, wherebyone hub the provision of means-for exerting l thereby to shorten the distance between said pressure on the edges of the film, and at the same time providing means for retaining the coils spaced apart, the film is held against any movement whatsoever, and therefore cannot warp, while at the same time free access of the treating fluids is permitted to the spaces between the coils.

Having thus described my invention, what I claim is: l

1. A device of the class described, comprising, in combination, a hub ada )ted to receive a strip of fihn in sp1ral ormation, means for exerting pressure locally on the edges of the film, and means for retaining the coils of said film in spaced relation.

2. A device of the class described, comprising, in combination, a two-part hub adapted to receive a strip of film in spiral formation, one part being movable toward and away from the other, means carried by said hub for locally engaging the edges of the film,

means for clampmg said hub parts together thereby to shorten the distance between said edge engaging means, and means for retaining the coils of said film in spaced relation.

3. A device of the class described, comprising, incombination, a two-part hub adapted to receive a strip of film in spiral formation, one part being movable toward and awa from the other, means carried by said hu for locally engaging the edges of the film, means for clampmg said hub parts together edge engaging means, means for limiting said clamping action, and means carried by said edge engaging means for retaining thecoils of said film in spaced relation.

4. A device of the class described, compris ing a pair of hub members one adapted to for clamping the hub members in abutting relation.

6. A-device of the class described, comprising a pair of hub members one adapted to slide'toward and away from the other in the directionof the length of the hub, a plurality of radially extending spokes carried by each of said hub members, a rim for each hub member attached to the outer ends of its spokes, and means for clamping the hub members in abutting relation, said rims being of such width that the rims'and hub members are respectively brought into abutting relation simultaneously.

In testimony whereof I have signed my 'name to this specification.

LAszLo ozAKo. 

